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<div class="refentry" title="Simple XML Subset Parser">
<a name="glib-Simple-XML-Subset-Parser"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle"><a name="glib-Simple-XML-Subset-Parser.top_of_page"></a>Simple XML Subset Parser</span></h2>
<p>Simple XML Subset Parser — parses a subset of XML</p>
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<div class="refsynopsisdiv" title="Synopsis">
<a name="glib-Simple-XML-Subset-Parser.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">
#include &lt;glib.h&gt;

enum                <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupError" title="enum GMarkupError">GMarkupError</a>;
#define             <a class="link" href="glib-Simple-XML-Subset-Parser.html#G-MARKUP-ERROR:CAPS" title="G_MARKUP_ERROR">G_MARKUP_ERROR</a>
enum                <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseFlags" title="enum GMarkupParseFlags">GMarkupParseFlags</a>;
                    <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext">GMarkupParseContext</a>;
                    <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParser" title="GMarkupParser">GMarkupParser</a>;
<a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="returnvalue">gchar</span></a>*              <a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-escape-text" title="g_markup_escape_text ()">g_markup_escape_text</a>                (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *text</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gssize" title="gssize"><span class="type">gssize</span></a> length</code></em>);
<a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="returnvalue">gchar</span></a> *             <a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-printf-escaped" title="g_markup_printf_escaped ()">g_markup_printf_escaped</a>             (<em class="parameter"><code>const <span class="type">char</span> *format</code></em>,
                                                         <em class="parameter"><code>...</code></em>);
<a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="returnvalue">gchar</span></a> *             <a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-vprintf-escaped" title="g_markup_vprintf_escaped ()">g_markup_vprintf_escaped</a>            (<em class="parameter"><code>const <span class="type">char</span> *format</code></em>,
                                                         <em class="parameter"><code><span class="type">va_list</span> args</code></em>);
<a class="link" href="glib-Basic-Types.html#gboolean" title="gboolean"><span class="returnvalue">gboolean</span></a>            <a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-parse-context-end-parse" title="g_markup_parse_context_end_parse ()">g_markup_parse_context_end_parse</a>    (<em class="parameter"><code><a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a> *context</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Error-Reporting.html#GError" title="GError"><span class="type">GError</span></a> **error</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-parse-context-free" title="g_markup_parse_context_free ()">g_markup_parse_context_free</a>         (<em class="parameter"><code><a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a> *context</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-parse-context-get-position" title="g_markup_parse_context_get_position ()">g_markup_parse_context_get_position</a> (<em class="parameter"><code><a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a> *context</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gint" title="gint"><span class="type">gint</span></a> *line_number</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gint" title="gint"><span class="type">gint</span></a> *char_number</code></em>);
const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="returnvalue">gchar</span></a> *       <a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-parse-context-get-element" title="g_markup_parse_context_get_element ()">g_markup_parse_context_get_element</a>  (<em class="parameter"><code><a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a> *context</code></em>);
const <a class="link" href="glib-Singly-Linked-Lists.html#GSList" title="GSList"><span class="returnvalue">GSList</span></a> *      <a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-parse-context-get-element-stack" title="g_markup_parse_context_get_element_stack ()">g_markup_parse_context_get_element_stack</a>
                                                        (<em class="parameter"><code><a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a> *context</code></em>);
<a class="link" href="glib-Basic-Types.html#gpointer" title="gpointer"><span class="returnvalue">gpointer</span></a>            <a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-parse-context-get-user-data" title="g_markup_parse_context_get_user_data ()">g_markup_parse_context_get_user_data</a>
                                                        (<em class="parameter"><code><a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a> *context</code></em>);
<a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="returnvalue">GMarkupParseContext</span></a> * <a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-parse-context-new" title="g_markup_parse_context_new ()">g_markup_parse_context_new</a>        (<em class="parameter"><code>const <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParser" title="GMarkupParser"><span class="type">GMarkupParser</span></a> *parser</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseFlags" title="enum GMarkupParseFlags"><span class="type">GMarkupParseFlags</span></a> flags</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gpointer" title="gpointer"><span class="type">gpointer</span></a> user_data</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Datasets.html#GDestroyNotify" title="GDestroyNotify ()"><span class="type">GDestroyNotify</span></a> user_data_dnotify</code></em>);
<a class="link" href="glib-Basic-Types.html#gboolean" title="gboolean"><span class="returnvalue">gboolean</span></a>            <a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-parse-context-parse" title="g_markup_parse_context_parse ()">g_markup_parse_context_parse</a>        (<em class="parameter"><code><a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a> *context</code></em>,
                                                         <em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *text</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gssize" title="gssize"><span class="type">gssize</span></a> text_len</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Error-Reporting.html#GError" title="GError"><span class="type">GError</span></a> **error</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-parse-context-push" title="g_markup_parse_context_push ()">g_markup_parse_context_push</a>         (<em class="parameter"><code><a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a> *context</code></em>,
                                                         <em class="parameter"><code>const <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParser" title="GMarkupParser"><span class="type">GMarkupParser</span></a> *parser</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gpointer" title="gpointer"><span class="type">gpointer</span></a> user_data</code></em>);
<a class="link" href="glib-Basic-Types.html#gpointer" title="gpointer"><span class="returnvalue">gpointer</span></a>            <a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-parse-context-pop" title="g_markup_parse_context_pop ()">g_markup_parse_context_pop</a>          (<em class="parameter"><code><a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a> *context</code></em>);

enum                <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupCollectType" title="enum GMarkupCollectType">GMarkupCollectType</a>;
<a class="link" href="glib-Basic-Types.html#gboolean" title="gboolean"><span class="returnvalue">gboolean</span></a>            <a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-collect-attributes" title="g_markup_collect_attributes ()">g_markup_collect_attributes</a>         (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *element_name</code></em>,
                                                         <em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> **attribute_names</code></em>,
                                                         <em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> **attribute_values</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Error-Reporting.html#GError" title="GError"><span class="type">GError</span></a> **error</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupCollectType" title="enum GMarkupCollectType"><span class="type">GMarkupCollectType</span></a> first_type</code></em>,
                                                         <em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *first_attr</code></em>,
                                                         <em class="parameter"><code>...</code></em>);
</pre>
</div>
<div class="refsect1" title="Description">
<a name="glib-Simple-XML-Subset-Parser.description"></a><h2>Description</h2>
<p>
The "GMarkup" parser is intended to parse a simple markup format
that's a subset of XML. This is a small, efficient, easy-to-use
parser. It should not be used if you expect to interoperate with other
applications generating full-scale XML. However, it's very useful for
application data files, config files, etc. where you know your
application will be the only one writing the file. Full-scale XML
parsers should be able to parse the subset used by GMarkup, so you can
easily migrate to full-scale XML at a later time if the need arises.
</p>
<p>
GMarkup is not guaranteed to signal an error on all invalid XML; the
parser may accept documents that an XML parser would not. However, XML
documents which are not well-formed<sup>[<a name="wellformed" href="#ftn.wellformed" class="footnote">5</a>]</sup> are not considered valid GMarkup
documents.
</p>
<p>
Simplifications to XML include:
</p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem"><p>
Only UTF-8 encoding is allowed.
</p></li>
<li class="listitem"><p>
No user-defined entities.
</p></li>
<li class="listitem"><p>
Processing instructions, comments and the doctype declaration are "passed
through" but are not interpreted in any way.
</p></li>
<li class="listitem"><p>
No DTD or validation.
</p></li>
</ul></div>
<p>
</p>
<p>
The markup format does support:
</p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem"><p>
Elements
</p></li>
<li class="listitem"><p>
Attributes
</p></li>
<li class="listitem"><p>
5 standard entities: <code class="literal">&amp;amp; &amp;lt; &amp;gt; &amp;quot; &amp;apos;</code>
</p></li>
<li class="listitem"><p>
Character references
</p></li>
<li class="listitem"><p>
Sections marked as CDATA
</p></li>
</ul></div>
<p>
</p>
</div>
<div class="refsect1" title="Details">
<a name="glib-Simple-XML-Subset-Parser.details"></a><h2>Details</h2>
<div class="refsect2" title="enum GMarkupError">
<a name="GMarkupError"></a><h3>enum GMarkupError</h3>
<pre class="programlisting">typedef enum
{
  G_MARKUP_ERROR_BAD_UTF8,
  G_MARKUP_ERROR_EMPTY,
  G_MARKUP_ERROR_PARSE,
  /* The following are primarily intended for specific GMarkupParser
   * implementations to set.
   */
  G_MARKUP_ERROR_UNKNOWN_ELEMENT,
  G_MARKUP_ERROR_UNKNOWN_ATTRIBUTE,
  G_MARKUP_ERROR_INVALID_CONTENT,
  G_MARKUP_ERROR_MISSING_ATTRIBUTE
} GMarkupError;
</pre>
<p>
Error codes returned by markup parsing.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><a name="G-MARKUP-ERROR-BAD-UTF8:CAPS"></a><span class="term"><code class="literal">G_MARKUP_ERROR_BAD_UTF8</code></span></p></td>
<td>text being parsed was not valid UTF-8
</td>
</tr>
<tr>
<td><p><a name="G-MARKUP-ERROR-EMPTY:CAPS"></a><span class="term"><code class="literal">G_MARKUP_ERROR_EMPTY</code></span></p></td>
<td>document contained nothing, or only whitespace
</td>
</tr>
<tr>
<td><p><a name="G-MARKUP-ERROR-PARSE:CAPS"></a><span class="term"><code class="literal">G_MARKUP_ERROR_PARSE</code></span></p></td>
<td>document was ill-formed
</td>
</tr>
<tr>
<td><p><a name="G-MARKUP-ERROR-UNKNOWN-ELEMENT:CAPS"></a><span class="term"><code class="literal">G_MARKUP_ERROR_UNKNOWN_ELEMENT</code></span></p></td>
<td>error should be set by <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParser" title="GMarkupParser"><span class="type">GMarkupParser</span></a> functions; element wasn't known
</td>
</tr>
<tr>
<td><p><a name="G-MARKUP-ERROR-UNKNOWN-ATTRIBUTE:CAPS"></a><span class="term"><code class="literal">G_MARKUP_ERROR_UNKNOWN_ATTRIBUTE</code></span></p></td>
<td>error should be set by <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParser" title="GMarkupParser"><span class="type">GMarkupParser</span></a> functions; attribute wasn't known
</td>
</tr>
<tr>
<td><p><a name="G-MARKUP-ERROR-INVALID-CONTENT:CAPS"></a><span class="term"><code class="literal">G_MARKUP_ERROR_INVALID_CONTENT</code></span></p></td>
<td>error should be set by <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParser" title="GMarkupParser"><span class="type">GMarkupParser</span></a> functions; content was invalid
</td>
</tr>
<tr>
<td><p><a name="G-MARKUP-ERROR-MISSING-ATTRIBUTE:CAPS"></a><span class="term"><code class="literal">G_MARKUP_ERROR_MISSING_ATTRIBUTE</code></span></p></td>
<td>error should be set by <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParser" title="GMarkupParser"><span class="type">GMarkupParser</span></a> functions; a required attribute was missing
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" title="G_MARKUP_ERROR">
<a name="G-MARKUP-ERROR:CAPS"></a><h3>G_MARKUP_ERROR</h3>
<pre class="programlisting">#define G_MARKUP_ERROR g_markup_error_quark ()
</pre>
<p>
Error domain for markup parsing. Errors in this domain will
be from the <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupError" title="enum GMarkupError"><span class="type">GMarkupError</span></a> enumeration. See <a class="link" href="glib-Error-Reporting.html#GError" title="GError"><span class="type">GError</span></a> for information on
error domains.
</p>
</div>
<hr>
<div class="refsect2" title="enum GMarkupParseFlags">
<a name="GMarkupParseFlags"></a><h3>enum GMarkupParseFlags</h3>
<pre class="programlisting">typedef enum
{
  G_MARKUP_DO_NOT_USE_THIS_UNSUPPORTED_FLAG = 1 &lt;&lt; 0,
  G_MARKUP_TREAT_CDATA_AS_TEXT              = 1 &lt;&lt; 1,
  G_MARKUP_PREFIX_ERROR_POSITION            = 1 &lt;&lt; 2
} GMarkupParseFlags;
</pre>
<p>
Flags that affect the behaviour of the parser.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><a name="G-MARKUP-DO-NOT-USE-THIS-UNSUPPORTED-FLAG:CAPS"></a><span class="term"><code class="literal">G_MARKUP_DO_NOT_USE_THIS_UNSUPPORTED_FLAG</code></span></p></td>
<td>flag you should not use.
</td>
</tr>
<tr>
<td><p><a name="G-MARKUP-TREAT-CDATA-AS-TEXT:CAPS"></a><span class="term"><code class="literal">G_MARKUP_TREAT_CDATA_AS_TEXT</code></span></p></td>
<td>When this flag is set, CDATA marked
  sections are not passed literally to the <em class="parameter"><code>passthrough</code></em> function of
  the parser. Instead, the content of the section (without the
  <code class="literal">&lt;![CDATA[</code> and <code class="literal">]]&gt;</code>) is
  passed to the <em class="parameter"><code>text</code></em> function. This flag was added in GLib 2.12.
</td>
</tr>
<tr>
<td><p><a name="G-MARKUP-PREFIX-ERROR-POSITION:CAPS"></a><span class="term"><code class="literal">G_MARKUP_PREFIX_ERROR_POSITION</code></span></p></td>
<td>Normally errors caught by GMarkup
  itself have line/column information prefixed to them to let the
  caller know the location of the error.  When this flag is set the
  location information is also prefixed to errors generated by the
  <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParser" title="GMarkupParser"><span class="type">GMarkupParser</span></a> implementation functions.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" title="GMarkupParseContext">
<a name="GMarkupParseContext"></a><h3>GMarkupParseContext</h3>
<pre class="programlisting">typedef struct _GMarkupParseContext GMarkupParseContext;</pre>
<p>
A parse context is used to parse a stream of bytes that you expect to
contain marked-up text. See <a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-parse-context-new" title="g_markup_parse_context_new ()"><code class="function">g_markup_parse_context_new()</code></a>,
<a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParser" title="GMarkupParser"><span class="type">GMarkupParser</span></a>, and so on for more details.
</p>
</div>
<hr>
<div class="refsect2" title="GMarkupParser">
<a name="GMarkupParser"></a><h3>GMarkupParser</h3>
<pre class="programlisting">typedef struct {
  /* Called for open tags &lt;foo bar="baz"&gt; */
  void (*start_element)  (GMarkupParseContext *context,
                          const gchar         *element_name,
                          const gchar        **attribute_names,
                          const gchar        **attribute_values,
                          gpointer             user_data,
                          GError             **error);

  /* Called for close tags &lt;/foo&gt; */
  void (*end_element)    (GMarkupParseContext *context,
                          const gchar         *element_name,
                          gpointer             user_data,
                          GError             **error);

  /* Called for character data */
  /* text is not nul-terminated */
  void (*text)           (GMarkupParseContext *context,
                          const gchar         *text,
                          gsize                text_len,  
                          gpointer             user_data,
                          GError             **error);

  /* Called for strings that should be re-saved verbatim in this same
   * position, but are not otherwise interpretable.  At the moment
   * this includes comments and processing instructions.
   */
  /* text is not nul-terminated. */
  void (*passthrough)    (GMarkupParseContext *context,
                          const gchar         *passthrough_text,
                          gsize                text_len,  
                          gpointer             user_data,
                          GError             **error);

  /* Called on error, including one set by other
   * methods in the vtable. The GError should not be freed.
   */
  void (*error)          (GMarkupParseContext *context,
                          GError              *error,
                          gpointer             user_data);
} GMarkupParser;
</pre>
<p>
Any of the fields in <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParser" title="GMarkupParser"><span class="type">GMarkupParser</span></a> can be <a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a>, in which case they
will be ignored. Except for the <em class="parameter"><code>error</code></em> function, any of these
callbacks can set an error; in particular the
<a class="link" href="glib-Simple-XML-Subset-Parser.html#G-MARKUP-ERROR-UNKNOWN-ELEMENT:CAPS"><code class="literal">G_MARKUP_ERROR_UNKNOWN_ELEMENT</code></a>, <a class="link" href="glib-Simple-XML-Subset-Parser.html#G-MARKUP-ERROR-UNKNOWN-ATTRIBUTE:CAPS"><code class="literal">G_MARKUP_ERROR_UNKNOWN_ATTRIBUTE</code></a>,
and <a class="link" href="glib-Simple-XML-Subset-Parser.html#G-MARKUP-ERROR-INVALID-CONTENT:CAPS"><code class="literal">G_MARKUP_ERROR_INVALID_CONTENT</code></a> errors are intended to be set
from these callbacks. If you set an error from a callback,
<a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-parse-context-parse" title="g_markup_parse_context_parse ()"><code class="function">g_markup_parse_context_parse()</code></a> will report that error back to its caller.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GMarkupParser.start-element"></a>start_element</code></em> ()</span></p></td>
<td>Callback to invoke when the opening tag of an element
    is seen.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GMarkupParser.end-element"></a>end_element</code></em> ()</span></p></td>
<td>Callback to invoke when the closing tag of an element is seen.
    Note that this is also called for empty tags like
    <code class="literal">&lt;empty/&gt;</code>.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GMarkupParser.text"></a>text</code></em> ()</span></p></td>
<td>Callback to invoke when some text is seen (text is always
    inside an element). Note that the text of an element may be spread
    over multiple calls of this function. If the <a class="link" href="glib-Simple-XML-Subset-Parser.html#G-MARKUP-TREAT-CDATA-AS-TEXT:CAPS"><code class="literal">G_MARKUP_TREAT_CDATA_AS_TEXT</code></a>
    flag is set, this function is also called for the content of CDATA marked
    sections.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GMarkupParser.passthrough"></a>passthrough</code></em> ()</span></p></td>
<td>Callback to invoke for comments, processing instructions 
    and doctype declarations; if you're re-writing the parsed document,
    write the passthrough text back out in the same position. If the
    <a class="link" href="glib-Simple-XML-Subset-Parser.html#G-MARKUP-TREAT-CDATA-AS-TEXT:CAPS"><code class="literal">G_MARKUP_TREAT_CDATA_AS_TEXT</code></a> flag is not set, this function is also
    called for CDATA marked sections.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GMarkupParser.error"></a>error</code></em> ()</span></p></td>
<td>Callback to invoke when an error occurs.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" title="g_markup_escape_text ()">
<a name="g-markup-escape-text"></a><h3>g_markup_escape_text ()</h3>
<pre class="programlisting"><a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="returnvalue">gchar</span></a>*              g_markup_escape_text                (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *text</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gssize" title="gssize"><span class="type">gssize</span></a> length</code></em>);</pre>
<p>
Escapes text so that the markup parser will parse it verbatim.
Less than, greater than, ampersand, etc. are replaced with the
corresponding entities. This function would typically be used
when writing out a file to be parsed with the markup parser.
</p>
<p>
Note that this function doesn't protect whitespace and line endings
from being processed according to the XML rules for normalization
of line endings and attribute values.
</p>
<p>
Note also that this function will produce character references in
the range of &amp;<span class="type">x1</span>; ... &amp;<span class="type">x1f</span>; for all control sequences
except for tabstop, newline and carriage return.  The character
references in this range are not valid XML 1.0, but they are
valid XML 1.1 and will be accepted by the GMarkup parser.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>text</code></em> :</span></p></td>
<td>some valid UTF-8 text
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>length</code></em> :</span></p></td>
<td>length of <em class="parameter"><code>text</code></em> in bytes, or -1 if the text is nul-terminated
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> a newly allocated string with the escaped text
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" title="g_markup_printf_escaped ()">
<a name="g-markup-printf-escaped"></a><h3>g_markup_printf_escaped ()</h3>
<pre class="programlisting"><a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="returnvalue">gchar</span></a> *             g_markup_printf_escaped             (<em class="parameter"><code>const <span class="type">char</span> *format</code></em>,
                                                         <em class="parameter"><code>...</code></em>);</pre>
<p>
Formats arguments according to <em class="parameter"><code>format</code></em>, escaping
all string and character arguments in the fashion
of <a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-escape-text" title="g_markup_escape_text ()"><code class="function">g_markup_escape_text()</code></a>. This is useful when you
want to insert literal strings into XML-style markup
output, without having to worry that the strings
might themselves contain markup.
</p>
<p>
</p>
<div class="informalexample">
  <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
    <tbody>
      <tr>
        <td class="listing_lines" align="right"><pre>1
2
3
4
5
6
7
8
9</pre></td>
        <td class="listing_code"><pre class="programlisting"><span class="keyword">const</span><span class="normal"> </span><span class="type">char</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">store </span><span class="symbol">=</span><span class="normal"> </span><span class="string">"Fortnum &amp; Mason"</span><span class="symbol">;</span>
<span class="keyword">const</span><span class="normal"> </span><span class="type">char</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">item </span><span class="symbol">=</span><span class="normal"> </span><span class="string">"Tea"</span><span class="symbol">;</span>
<span class="type">char</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">output</span><span class="symbol">;</span>
<span class="normal"> </span>
<span class="normal">output </span><span class="symbol">=</span><span class="normal"> </span><span class="function"><a href="glib-Simple-XML-Subset-Parser.html#g-markup-printf-escaped">g_markup_printf_escaped</a></span><span class="normal"> </span><span class="symbol">(</span><span class="string">"&lt;purchase&gt;"</span>
<span class="normal">                                  </span><span class="string">"&lt;store&gt;%s&lt;/store&gt;"</span>
<span class="normal">                                  </span><span class="string">"&lt;item&gt;%s&lt;/item&gt;"</span>
<span class="normal">                                  </span><span class="string">"&lt;/purchase&gt;"</span><span class="symbol">,</span>
<span class="normal">                                  store</span><span class="symbol">,</span><span class="normal"> item</span><span class="symbol">);</span></pre></td>
      </tr>
    </tbody>
  </table>
</div>

<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>format</code></em> :</span></p></td>
<td>printf() style format string
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>...</code></em> :</span></p></td>
<td>the arguments to insert in the format string
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> newly allocated result from formatting
 operation. Free with <a class="link" href="glib-Memory-Allocation.html#g-free" title="g_free ()"><code class="function">g_free()</code></a>.

</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.4</p>
</div>
<hr>
<div class="refsect2" title="g_markup_vprintf_escaped ()">
<a name="g-markup-vprintf-escaped"></a><h3>g_markup_vprintf_escaped ()</h3>
<pre class="programlisting"><a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="returnvalue">gchar</span></a> *             g_markup_vprintf_escaped            (<em class="parameter"><code>const <span class="type">char</span> *format</code></em>,
                                                         <em class="parameter"><code><span class="type">va_list</span> args</code></em>);</pre>
<p>
Formats the data in <em class="parameter"><code>args</code></em> according to <em class="parameter"><code>format</code></em>, escaping
all string and character arguments in the fashion
of <a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-escape-text" title="g_markup_escape_text ()"><code class="function">g_markup_escape_text()</code></a>. See <a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-printf-escaped" title="g_markup_printf_escaped ()"><code class="function">g_markup_printf_escaped()</code></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>format</code></em> :</span></p></td>
<td>printf() style format string
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>args</code></em> :</span></p></td>
<td>variable argument list, similar to <code class="function">vprintf()</code>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> newly allocated result from formatting
 operation. Free with <a class="link" href="glib-Memory-Allocation.html#g-free" title="g_free ()"><code class="function">g_free()</code></a>.

</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.4</p>
</div>
<hr>
<div class="refsect2" title="g_markup_parse_context_end_parse ()">
<a name="g-markup-parse-context-end-parse"></a><h3>g_markup_parse_context_end_parse ()</h3>
<pre class="programlisting"><a class="link" href="glib-Basic-Types.html#gboolean" title="gboolean"><span class="returnvalue">gboolean</span></a>            g_markup_parse_context_end_parse    (<em class="parameter"><code><a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a> *context</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Error-Reporting.html#GError" title="GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>
Signals to the <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a> that all data has been
fed into the parse context with <a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-parse-context-parse" title="g_markup_parse_context_parse ()"><code class="function">g_markup_parse_context_parse()</code></a>.
This function reports an error if the document isn't complete,
for example if elements are still open.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>error</code></em> :</span></p></td>
<td>return location for a <a class="link" href="glib-Error-Reporting.html#GError" title="GError"><span class="type">GError</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> <a class="link" href="glib-Standard-Macros.html#TRUE:CAPS" title="TRUE"><code class="literal">TRUE</code></a> on success, <a class="link" href="glib-Standard-Macros.html#FALSE:CAPS" title="FALSE"><code class="literal">FALSE</code></a> if an error was set
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" title="g_markup_parse_context_free ()">
<a name="g-markup-parse-context-free"></a><h3>g_markup_parse_context_free ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                g_markup_parse_context_free         (<em class="parameter"><code><a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a> *context</code></em>);</pre>
<p>
Frees a <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a>. Can't be called from inside
one of the <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParser" title="GMarkupParser"><span class="type">GMarkupParser</span></a> functions. Can't be called while
a subparser is pushed.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" title="g_markup_parse_context_get_position ()">
<a name="g-markup-parse-context-get-position"></a><h3>g_markup_parse_context_get_position ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                g_markup_parse_context_get_position (<em class="parameter"><code><a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a> *context</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gint" title="gint"><span class="type">gint</span></a> *line_number</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gint" title="gint"><span class="type">gint</span></a> *char_number</code></em>);</pre>
<p>
Retrieves the current line number and the number of the character on
that line. Intended for use in error messages; there are no strict
semantics for what constitutes the "current" line number other than
"the best number we could come up with for error messages."
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>line_number</code></em> :</span></p></td>
<td>return location for a line number, or <a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>char_number</code></em> :</span></p></td>
<td>return location for a char-on-line number, or <a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" title="g_markup_parse_context_get_element ()">
<a name="g-markup-parse-context-get-element"></a><h3>g_markup_parse_context_get_element ()</h3>
<pre class="programlisting">const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="returnvalue">gchar</span></a> *       g_markup_parse_context_get_element  (<em class="parameter"><code><a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a> *context</code></em>);</pre>
<p>
Retrieves the name of the currently open element.
</p>
<p>
If called from the start_element or end_element handlers this will
give the element_name as passed to those functions. For the parent
elements, see <a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-parse-context-get-element-stack" title="g_markup_parse_context_get_element_stack ()"><code class="function">g_markup_parse_context_get_element_stack()</code></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the name of the currently open element, or <a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a>
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.2</p>
</div>
<hr>
<div class="refsect2" title="g_markup_parse_context_get_element_stack ()">
<a name="g-markup-parse-context-get-element-stack"></a><h3>g_markup_parse_context_get_element_stack ()</h3>
<pre class="programlisting">const <a class="link" href="glib-Singly-Linked-Lists.html#GSList" title="GSList"><span class="returnvalue">GSList</span></a> *      g_markup_parse_context_get_element_stack
                                                        (<em class="parameter"><code><a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a> *context</code></em>);</pre>
<p>
Retrieves the element stack from the internal state of the parser.
The returned <a class="link" href="glib-Singly-Linked-Lists.html#GSList" title="GSList"><span class="type">GSList</span></a> is a list of strings where the first item is
the currently open tag (as would be returned by
<a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-parse-context-get-element" title="g_markup_parse_context_get_element ()"><code class="function">g_markup_parse_context_get_element()</code></a>) and the next item is its
immediate parent.
</p>
<p>
This function is intended to be used in the start_element and
end_element handlers where <a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-parse-context-get-element" title="g_markup_parse_context_get_element ()"><code class="function">g_markup_parse_context_get_element()</code></a>
would merely return the name of the element that is being
processed.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> the element stack, which must not be modified

</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.16</p>
</div>
<hr>
<div class="refsect2" title="g_markup_parse_context_get_user_data ()">
<a name="g-markup-parse-context-get-user-data"></a><h3>g_markup_parse_context_get_user_data ()</h3>
<pre class="programlisting"><a class="link" href="glib-Basic-Types.html#gpointer" title="gpointer"><span class="returnvalue">gpointer</span></a>            g_markup_parse_context_get_user_data
                                                        (<em class="parameter"><code><a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a> *context</code></em>);</pre>
<p>
Returns the user_data associated with <em class="parameter"><code>context</code></em>.  This will either
be the user_data that was provided to <a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-parse-context-new" title="g_markup_parse_context_new ()"><code class="function">g_markup_parse_context_new()</code></a>
or to the most recent call of <a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-parse-context-push" title="g_markup_parse_context_push ()"><code class="function">g_markup_parse_context_push()</code></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> the provided user_data. The returned data belongs to
    the markup context and will be freed when <code class="function">g_markup_context_free()</code>
    is called.

</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.18</p>
</div>
<hr>
<div class="refsect2" title="g_markup_parse_context_new ()">
<a name="g-markup-parse-context-new"></a><h3>g_markup_parse_context_new ()</h3>
<pre class="programlisting"><a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="returnvalue">GMarkupParseContext</span></a> * g_markup_parse_context_new        (<em class="parameter"><code>const <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParser" title="GMarkupParser"><span class="type">GMarkupParser</span></a> *parser</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseFlags" title="enum GMarkupParseFlags"><span class="type">GMarkupParseFlags</span></a> flags</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gpointer" title="gpointer"><span class="type">gpointer</span></a> user_data</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Datasets.html#GDestroyNotify" title="GDestroyNotify ()"><span class="type">GDestroyNotify</span></a> user_data_dnotify</code></em>);</pre>
<p>
Creates a new parse context. A parse context is used to parse
marked-up documents. You can feed any number of documents into
a context, as long as no errors occur; once an error occurs,
the parse context can't continue to parse text (you have to free it
and create a new parse context).
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>parser</code></em> :</span></p></td>
<td>a <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParser" title="GMarkupParser"><span class="type">GMarkupParser</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>flags</code></em> :</span></p></td>
<td>one or more <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseFlags" title="enum GMarkupParseFlags"><span class="type">GMarkupParseFlags</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td>
<td>user data to pass to <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParser" title="GMarkupParser"><span class="type">GMarkupParser</span></a> functions
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>user_data_dnotify</code></em> :</span></p></td>
<td>user data destroy notifier called when the parse context is freed
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> a new <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" title="g_markup_parse_context_parse ()">
<a name="g-markup-parse-context-parse"></a><h3>g_markup_parse_context_parse ()</h3>
<pre class="programlisting"><a class="link" href="glib-Basic-Types.html#gboolean" title="gboolean"><span class="returnvalue">gboolean</span></a>            g_markup_parse_context_parse        (<em class="parameter"><code><a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a> *context</code></em>,
                                                         <em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *text</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gssize" title="gssize"><span class="type">gssize</span></a> text_len</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Error-Reporting.html#GError" title="GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>
Feed some data to the <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a>. The data need not
be valid UTF-8; an error will be signaled if it's invalid.
The data need not be an entire document; you can feed a document
into the parser incrementally, via multiple calls to this function.
Typically, as you receive data from a network connection or file,
you feed each received chunk of data into this function, aborting
the process if an error occurs. Once an error is reported, no further
data may be fed to the <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a>; all errors are fatal.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>text</code></em> :</span></p></td>
<td>chunk of text to parse
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>text_len</code></em> :</span></p></td>
<td>length of <em class="parameter"><code>text</code></em> in bytes
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>error</code></em> :</span></p></td>
<td>return location for a <a class="link" href="glib-Error-Reporting.html#GError" title="GError"><span class="type">GError</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> <a class="link" href="glib-Standard-Macros.html#FALSE:CAPS" title="FALSE"><code class="literal">FALSE</code></a> if an error occurred, <a class="link" href="glib-Standard-Macros.html#TRUE:CAPS" title="TRUE"><code class="literal">TRUE</code></a> on success
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" title="g_markup_parse_context_push ()">
<a name="g-markup-parse-context-push"></a><h3>g_markup_parse_context_push ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                g_markup_parse_context_push         (<em class="parameter"><code><a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a> *context</code></em>,
                                                         <em class="parameter"><code>const <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParser" title="GMarkupParser"><span class="type">GMarkupParser</span></a> *parser</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gpointer" title="gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
<p>
Temporarily redirects markup data to a sub-parser.
</p>
<p>
This function may only be called from the start_element handler of
a <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParser" title="GMarkupParser"><span class="type">GMarkupParser</span></a>.  It must be matched with a corresponding call to
<a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-parse-context-pop" title="g_markup_parse_context_pop ()"><code class="function">g_markup_parse_context_pop()</code></a> in the matching end_element handler
(except in the case that the parser aborts due to an error).
</p>
<p>
All tags, text and other data between the matching tags is
redirected to the subparser given by <em class="parameter"><code>parser</code></em>.  <em class="parameter"><code>user_data</code></em> is used
as the user_data for that parser.  <em class="parameter"><code>user_data</code></em> is also passed to the
error callback in the event that an error occurs.  This includes
errors that occur in subparsers of the subparser.
</p>
<p>
The end tag matching the start tag for which this call was made is
handled by the previous parser (which is given its own user_data)
which is why <a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-parse-context-pop" title="g_markup_parse_context_pop ()"><code class="function">g_markup_parse_context_pop()</code></a> is provided to allow "one
last access" to the <em class="parameter"><code>user_data</code></em> provided to this function.  In the
case of error, the <em class="parameter"><code>user_data</code></em> provided here is passed directly to
the error callback of the subparser and <code class="function">g_markup_parse_context()</code>
should not be called.  In either case, if <em class="parameter"><code>user_data</code></em> was allocated
then it ought to be freed from both of these locations.
</p>
<p>
This function is not intended to be directly called by users
interested in invoking subparsers.  Instead, it is intended to be
used by the subparsers themselves to implement a higher-level
interface.
</p>
<p>
As an example, see the following implementation of a simple
parser that counts the number of tags encountered.
</p>
<p>
</p>
<div class="informalexample">
  <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
    <tbody>
      <tr>
        <td class="listing_lines" align="right"><pre>1
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        <td class="listing_code"><pre class="programlisting"><span class="keyword">typedef</span><span class="normal"> </span><span class="keyword">struct</span>
<span class="cbracket">{</span>
<span class="normal">  </span><span class="usertype">gint</span><span class="normal"> tag_count</span><span class="symbol">;</span>
<span class="cbracket">}</span><span class="normal"> CounterData</span><span class="symbol">;</span>

<span class="keyword">static</span><span class="normal"> </span><span class="type">void</span>
<span class="function">counter_start_element</span><span class="normal"> </span><span class="symbol">(</span><span class="usertype">GMarkupParseContext</span><span class="normal">  </span><span class="symbol">*</span><span class="normal">context</span><span class="symbol">,</span>
<span class="normal">                       </span><span class="keyword">const</span><span class="normal"> </span><span class="usertype">gchar</span><span class="normal">          </span><span class="symbol">*</span><span class="normal">element_name</span><span class="symbol">,</span>
<span class="normal">                       </span><span class="keyword">const</span><span class="normal"> </span><span class="usertype">gchar</span><span class="normal">         </span><span class="symbol">**</span><span class="normal">attribute_names</span><span class="symbol">,</span>
<span class="normal">                       </span><span class="keyword">const</span><span class="normal"> </span><span class="usertype">gchar</span><span class="normal">         </span><span class="symbol">**</span><span class="normal">attribute_values</span><span class="symbol">,</span>
<span class="normal">                       </span><span class="usertype">gpointer</span><span class="normal">              user_data</span><span class="symbol">,</span>
<span class="normal">                       </span><span class="usertype">GError</span><span class="normal">              </span><span class="symbol">**</span><span class="normal">error</span><span class="symbol">)</span>
<span class="cbracket">{</span>
<span class="normal">  </span><span class="usertype">CounterData</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">data </span><span class="symbol">=</span><span class="normal"> user_data</span><span class="symbol">;</span>

<span class="normal">  data</span><span class="symbol">-&gt;</span><span class="normal">tag_count</span><span class="symbol">++;</span>
<span class="cbracket">}</span>

<span class="keyword">static</span><span class="normal"> </span><span class="type">void</span>
<span class="function">counter_error</span><span class="normal"> </span><span class="symbol">(</span><span class="usertype">GMarkupParseContext</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">context</span><span class="symbol">,</span>
<span class="normal">               </span><span class="usertype">GError</span><span class="normal">              </span><span class="symbol">*</span><span class="normal">error</span><span class="symbol">,</span>
<span class="normal">               </span><span class="usertype">gpointer</span><span class="normal">             user_data</span><span class="symbol">)</span>
<span class="cbracket">{</span>
<span class="normal">  </span><span class="usertype">CounterData</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">data </span><span class="symbol">=</span><span class="normal"> user_data</span><span class="symbol">;</span>

<span class="normal">  </span><span class="function"><a href="glib-Memory-Slices.html#g-slice-free">g_slice_free</a></span><span class="normal"> </span><span class="symbol">(</span><span class="normal">CounterData</span><span class="symbol">,</span><span class="normal"> data</span><span class="symbol">);</span>
<span class="cbracket">}</span>

<span class="keyword">static</span><span class="normal"> </span><span class="usertype">GMarkupParser</span><span class="normal"> counter_subparser </span><span class="symbol">=</span>
<span class="cbracket">{</span>
<span class="normal">  counter_start_element</span><span class="symbol">,</span>
<span class="normal">  <a href="glib-Standard-Macros.html#NULL:CAPS">NULL</a></span><span class="symbol">,</span>
<span class="normal">  <a href="glib-Standard-Macros.html#NULL:CAPS">NULL</a></span><span class="symbol">,</span>
<span class="normal">  <a href="glib-Standard-Macros.html#NULL:CAPS">NULL</a></span><span class="symbol">,</span>
<span class="normal">  counter_error</span>
<span class="cbracket">}</span><span class="symbol">;</span></pre></td>
      </tr>
    </tbody>
  </table>
</div>

<p>
</p>
<p>
In order to allow this parser to be easily used as a subparser, the
following interface is provided:
</p>
<p>
</p>
<div class="informalexample">
  <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
    <tbody>
      <tr>
        <td class="listing_lines" align="right"><pre>1
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        <td class="listing_code"><pre class="programlisting"><span class="type">void</span>
<span class="function">start_counting</span><span class="normal"> </span><span class="symbol">(</span><span class="usertype">GMarkupParseContext</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">context</span><span class="symbol">)</span>
<span class="cbracket">{</span>
<span class="normal">  </span><span class="usertype">CounterData</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">data </span><span class="symbol">=</span><span class="normal"> </span><span class="function"><a href="glib-Memory-Slices.html#g-slice-new">g_slice_new</a></span><span class="normal"> </span><span class="symbol">(</span><span class="normal">CounterData</span><span class="symbol">);</span>

<span class="normal">  data</span><span class="symbol">-&gt;</span><span class="normal">tag_count </span><span class="symbol">=</span><span class="normal"> </span><span class="number">0</span><span class="symbol">;</span>
<span class="normal">  </span><span class="function"><a href="glib-Simple-XML-Subset-Parser.html#g-markup-parse-context-push">g_markup_parse_context_push</a></span><span class="normal"> </span><span class="symbol">(</span><span class="normal">context</span><span class="symbol">,</span><span class="normal"> </span><span class="symbol">&amp;</span><span class="normal">counter_subparser</span><span class="symbol">,</span><span class="normal"> data</span><span class="symbol">);</span>
<span class="cbracket">}</span>

<span class="normal"><a href="glib-Basic-Types.html#gint">gint</a></span>
<span class="function">end_counting</span><span class="normal"> </span><span class="symbol">(</span><span class="usertype">GMarkupParseContext</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">context</span><span class="symbol">)</span>
<span class="cbracket">{</span>
<span class="normal">  </span><span class="usertype">CounterData</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">data </span><span class="symbol">=</span><span class="normal"> </span><span class="function"><a href="glib-Simple-XML-Subset-Parser.html#g-markup-parse-context-pop">g_markup_parse_context_pop</a></span><span class="normal"> </span><span class="symbol">(</span><span class="normal">context</span><span class="symbol">);</span>
<span class="normal">  </span><span class="type">int</span><span class="normal"> result</span><span class="symbol">;</span>

<span class="normal">  result </span><span class="symbol">=</span><span class="normal"> data</span><span class="symbol">-&gt;</span><span class="normal">tag_count</span><span class="symbol">;</span>
<span class="normal">  </span><span class="function"><a href="glib-Memory-Slices.html#g-slice-free">g_slice_free</a></span><span class="normal"> </span><span class="symbol">(</span><span class="normal">CounterData</span><span class="symbol">,</span><span class="normal"> data</span><span class="symbol">);</span>

<span class="normal">  </span><span class="keyword">return</span><span class="normal"> result</span><span class="symbol">;</span>
<span class="cbracket">}</span></pre></td>
      </tr>
    </tbody>
  </table>
</div>

<p>
</p>
<p>
The subparser would then be used as follows:
</p>
<p>
</p>
<div class="informalexample">
  <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
    <tbody>
      <tr>
        <td class="listing_lines" align="right"><pre>1
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        <td class="listing_code"><pre class="programlisting"><span class="keyword">static</span><span class="normal"> </span><span class="type">void</span><span class="normal"> </span><span class="function">start_element</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">context</span><span class="symbol">,</span><span class="normal"> element_name</span><span class="symbol">,</span><span class="normal"> </span><span class="symbol">...)</span>
<span class="cbracket">{</span>
<span class="normal">  </span><span class="keyword">if</span><span class="normal"> </span><span class="symbol">(</span><span class="function">strcmp</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">element_name</span><span class="symbol">,</span><span class="normal"> </span><span class="string">"count-these"</span><span class="symbol">)</span><span class="normal"> </span><span class="symbol">==</span><span class="normal"> </span><span class="number">0</span><span class="symbol">)</span>
<span class="normal">    </span><span class="function">start_counting</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">context</span><span class="symbol">);</span>

<span class="normal">  </span><span class="comment">/* else, handle other tags... */</span>
<span class="cbracket">}</span>

<span class="keyword">static</span><span class="normal"> </span><span class="type">void</span><span class="normal"> </span><span class="function">end_element</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">context</span><span class="symbol">,</span><span class="normal"> element_name</span><span class="symbol">,</span><span class="normal"> </span><span class="symbol">...)</span>
<span class="cbracket">{</span>
<span class="normal">  </span><span class="keyword">if</span><span class="normal"> </span><span class="symbol">(</span><span class="function">strcmp</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">element_name</span><span class="symbol">,</span><span class="normal"> </span><span class="string">"count-these"</span><span class="symbol">)</span><span class="normal"> </span><span class="symbol">==</span><span class="normal"> </span><span class="number">0</span><span class="symbol">)</span>
<span class="normal">    </span><span class="function"><a href="glib-Warnings-and-Assertions.html#g-print">g_print</a></span><span class="normal"> </span><span class="symbol">(</span><span class="string">"Counted %d tags</span><span class="specialchar">\n</span><span class="string">"</span><span class="symbol">,</span><span class="normal"> </span><span class="function">end_counting</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">context</span><span class="symbol">));</span>

<span class="normal">  </span><span class="comment">/* else, handle other tags... */</span>
<span class="cbracket">}</span></pre></td>
      </tr>
    </tbody>
  </table>
</div>

<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>parser</code></em> :</span></p></td>
<td>a <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParser" title="GMarkupParser"><span class="type">GMarkupParser</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td>
<td>user data to pass to <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParser" title="GMarkupParser"><span class="type">GMarkupParser</span></a> functions
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.18</p>
</div>
<hr>
<div class="refsect2" title="g_markup_parse_context_pop ()">
<a name="g-markup-parse-context-pop"></a><h3>g_markup_parse_context_pop ()</h3>
<pre class="programlisting"><a class="link" href="glib-Basic-Types.html#gpointer" title="gpointer"><span class="returnvalue">gpointer</span></a>            g_markup_parse_context_pop          (<em class="parameter"><code><a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a> *context</code></em>);</pre>
<p>
Completes the process of a temporary sub-parser redirection.
</p>
<p>
This function exists to collect the user_data allocated by a
matching call to <a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-parse-context-push" title="g_markup_parse_context_push ()"><code class="function">g_markup_parse_context_push()</code></a>.  It must be called
in the end_element handler corresponding to the start_element
handler during which <a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-parse-context-push" title="g_markup_parse_context_push ()"><code class="function">g_markup_parse_context_push()</code></a> was called.  You
must not call this function from the error callback -- the
<em class="parameter"><code>user_data</code></em> is provided directly to the callback in that case.
</p>
<p>
This function is not intended to be directly called by users
interested in invoking subparsers.  Instead, it is intended to be
used by the subparsers themselves to implement a higher-level
interface.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParseContext" title="GMarkupParseContext"><span class="type">GMarkupParseContext</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> the user_data passed to <a class="link" href="glib-Simple-XML-Subset-Parser.html#g-markup-parse-context-push" title="g_markup_parse_context_push ()"><code class="function">g_markup_parse_context_push()</code></a>.

</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.18</p>
</div>
<hr>
<div class="refsect2" title="enum GMarkupCollectType">
<a name="GMarkupCollectType"></a><h3>enum GMarkupCollectType</h3>
<pre class="programlisting">typedef enum
{
  G_MARKUP_COLLECT_INVALID,
  G_MARKUP_COLLECT_STRING,
  G_MARKUP_COLLECT_STRDUP,
  G_MARKUP_COLLECT_BOOLEAN,
  G_MARKUP_COLLECT_TRISTATE,

  G_MARKUP_COLLECT_OPTIONAL = (1 &lt;&lt; 16)
} GMarkupCollectType;
</pre>
<p>
A mixed enumerated type and flags field.  You must specify one type
(string, strdup, boolean, tristate).  Additionally, you may
optionally bitwise OR the type with the flag
<a class="link" href="glib-Simple-XML-Subset-Parser.html#G-MARKUP-COLLECT-OPTIONAL:CAPS"><code class="literal">G_MARKUP_COLLECT_OPTIONAL</code></a>.
</p>
<p>
It is likely that this enum will be extended in the future to
support other types.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><a name="G-MARKUP-COLLECT-INVALID:CAPS"></a><span class="term"><code class="literal">G_MARKUP_COLLECT_INVALID</code></span></p></td>
<td>used to terminate the list of attributes
                           to collect.
</td>
</tr>
<tr>
<td><p><a name="G-MARKUP-COLLECT-STRING:CAPS"></a><span class="term"><code class="literal">G_MARKUP_COLLECT_STRING</code></span></p></td>
<td>collect the string pointer directly from
                          the attribute_values[] array.  Expects a
                          parameter of type (const char **).  If
                          <a class="link" href="glib-Simple-XML-Subset-Parser.html#G-MARKUP-COLLECT-OPTIONAL:CAPS"><code class="literal">G_MARKUP_COLLECT_OPTIONAL</code></a> is specified
                          and the attribute isn't present then the
                          pointer will be set to <a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a>.
</td>
</tr>
<tr>
<td><p><a name="G-MARKUP-COLLECT-STRDUP:CAPS"></a><span class="term"><code class="literal">G_MARKUP_COLLECT_STRDUP</code></span></p></td>
<td>as with <a class="link" href="glib-Simple-XML-Subset-Parser.html#G-MARKUP-COLLECT-STRING:CAPS"><code class="literal">G_MARKUP_COLLECT_STRING</code></a>, but
                          expects a parameter of type (char **) and
                          <a class="link" href="glib-String-Utility-Functions.html#g-strdup" title="g_strdup ()"><code class="function">g_strdup()</code></a>s the returned pointer.  The
                          pointer must be freed with <a class="link" href="glib-Memory-Allocation.html#g-free" title="g_free ()"><code class="function">g_free()</code></a>.
</td>
</tr>
<tr>
<td><p><a name="G-MARKUP-COLLECT-BOOLEAN:CAPS"></a><span class="term"><code class="literal">G_MARKUP_COLLECT_BOOLEAN</code></span></p></td>
<td>expects a parameter of type (gboolean *)
                           and parses the attribute value as a
                           boolean.  Sets <a class="link" href="glib-Standard-Macros.html#FALSE:CAPS" title="FALSE"><code class="literal">FALSE</code></a> if the attribute
                           isn't present.  Valid boolean values
                           consist of (case insensitive) "false",
                           "f", "no", "n", "0" and "true", "t",
                           "yes", "y", "1".
</td>
</tr>
<tr>
<td><p><a name="G-MARKUP-COLLECT-TRISTATE:CAPS"></a><span class="term"><code class="literal">G_MARKUP_COLLECT_TRISTATE</code></span></p></td>
<td>as with <a class="link" href="glib-Simple-XML-Subset-Parser.html#G-MARKUP-COLLECT-BOOLEAN:CAPS"><code class="literal">G_MARKUP_COLLECT_BOOLEAN</code></a>, but
                            in the case of a missing attribute a
                            value is set that compares equal to
                            neither <a class="link" href="glib-Standard-Macros.html#FALSE:CAPS" title="FALSE"><code class="literal">FALSE</code></a> nor <a class="link" href="glib-Standard-Macros.html#TRUE:CAPS" title="TRUE"><code class="literal">TRUE</code></a>.
                            G_MARKUP_COLLECT_OPTIONAL is implied.
</td>
</tr>
<tr>
<td><p><a name="G-MARKUP-COLLECT-OPTIONAL:CAPS"></a><span class="term"><code class="literal">G_MARKUP_COLLECT_OPTIONAL</code></span></p></td>
<td>can be bitwise ORed with the other
                            fields.  If present, allows the
                            attribute not to appear.  A default
                            value is set depending on what value
                            type is used.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" title="g_markup_collect_attributes ()">
<a name="g-markup-collect-attributes"></a><h3>g_markup_collect_attributes ()</h3>
<pre class="programlisting"><a class="link" href="glib-Basic-Types.html#gboolean" title="gboolean"><span class="returnvalue">gboolean</span></a>            g_markup_collect_attributes         (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *element_name</code></em>,
                                                         <em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> **attribute_names</code></em>,
                                                         <em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> **attribute_values</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Error-Reporting.html#GError" title="GError"><span class="type">GError</span></a> **error</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupCollectType" title="enum GMarkupCollectType"><span class="type">GMarkupCollectType</span></a> first_type</code></em>,
                                                         <em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *first_attr</code></em>,
                                                         <em class="parameter"><code>...</code></em>);</pre>
<p>
Collects the attributes of the element from the
data passed to the <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupParser" title="GMarkupParser"><span class="type">GMarkupParser</span></a> start_element
function, dealing with common error conditions
and supporting boolean values.
</p>
<p>
This utility function is not required to write
a parser but can save a lot of typing.
</p>
<p>
The <em class="parameter"><code>element_name</code></em>, <em class="parameter"><code>attribute_names</code></em>,
<em class="parameter"><code>attribute_values</code></em> and <em class="parameter"><code>error</code></em> parameters passed
to the start_element callback should be passed
unmodified to this function.
</p>
<p>
Following these arguments is a list of
"supported" attributes to collect.  It is an
error to specify multiple attributes with the
same name.  If any attribute not in the list
appears in the <em class="parameter"><code>attribute_names</code></em> array then an
unknown attribute error will result.
</p>
<p>
The <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupCollectType" title="enum GMarkupCollectType"><span class="type">GMarkupCollectType</span></a> field allows specifying
the type of collection to perform and if a
given attribute must appear or is optional.
</p>
<p>
The attribute name is simply the name of the
attribute to collect.
</p>
<p>
The pointer should be of the appropriate type
(see the descriptions under
<a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupCollectType" title="enum GMarkupCollectType"><span class="type">GMarkupCollectType</span></a>) and may be <a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a> in case a
particular attribute is to be allowed but
ignored.
</p>
<p>
This function deals with issuing errors for missing attributes 
(of type <a class="link" href="glib-Simple-XML-Subset-Parser.html#G-MARKUP-ERROR-MISSING-ATTRIBUTE:CAPS"><code class="literal">G_MARKUP_ERROR_MISSING_ATTRIBUTE</code></a>), unknown attributes 
(of type <a class="link" href="glib-Simple-XML-Subset-Parser.html#G-MARKUP-ERROR-UNKNOWN-ATTRIBUTE:CAPS"><code class="literal">G_MARKUP_ERROR_UNKNOWN_ATTRIBUTE</code></a>) and duplicate 
attributes (of type <a class="link" href="glib-Simple-XML-Subset-Parser.html#G-MARKUP-ERROR-INVALID-CONTENT:CAPS"><code class="literal">G_MARKUP_ERROR_INVALID_CONTENT</code></a>) as well 
as parse errors for boolean-valued attributes (again of type
<a class="link" href="glib-Simple-XML-Subset-Parser.html#G-MARKUP-ERROR-INVALID-CONTENT:CAPS"><code class="literal">G_MARKUP_ERROR_INVALID_CONTENT</code></a>). In all of these cases <a class="link" href="glib-Standard-Macros.html#FALSE:CAPS" title="FALSE"><code class="literal">FALSE</code></a> 
will be returned and <em class="parameter"><code>error</code></em> will be set as appropriate.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>element_name</code></em> :</span></p></td>
<td>the current tag name
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>attribute_names</code></em> :</span></p></td>
<td>the attribute names
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>attribute_values</code></em> :</span></p></td>
<td>the attribute values
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>error</code></em> :</span></p></td>
<td>a pointer to a <a class="link" href="glib-Error-Reporting.html#GError" title="GError"><span class="type">GError</span></a> or <a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>first_type</code></em> :</span></p></td>
<td>the <a class="link" href="glib-Simple-XML-Subset-Parser.html#GMarkupCollectType" title="enum GMarkupCollectType"><span class="type">GMarkupCollectType</span></a> of the
             first attribute
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>first_attr</code></em> :</span></p></td>
<td>the name of the first attribute
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>...</code></em> :</span></p></td>
<td>a pointer to the storage location of the
      first attribute (or <a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a>), followed by
      more types names and pointers, ending
      with <a class="link" href="glib-Simple-XML-Subset-Parser.html#G-MARKUP-COLLECT-INVALID:CAPS"><code class="literal">G_MARKUP_COLLECT_INVALID</code></a>.
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> <a class="link" href="glib-Standard-Macros.html#TRUE:CAPS" title="TRUE"><code class="literal">TRUE</code></a> if successful

</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.16</p>
</div>
</div>
<div class="footnotes">
<br><hr width="100" align="left">
<div class="footnote"><a class="ulink" href="http://www.w3.org/TR/REC-xml/" target="_top"><sup>[<a name="ftn.wellformed" href="#wellformed" class="ulink">5</a>] </sup>XML specification</a></div>
</div>
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